Installation of a Gree wall-mounted heat pump in Rosemont–La Petite-Patrie
AirGreen installs a Gree wall-mounted heat pump above kitchen cabinets in Rosemont–La Petite-Patrie: discreet capping, gravity drain, short connections, comfort and savings all year round.
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An exemplary integration into an active kitchen, designed for comfort 12 months a year
At AirGreen , we prioritize discreet, efficient, and sustainable HVAC installations . This project in a home in Rosemont–La Petite-Patrie (Montreal) illustrates our approach: a Gree wall-mounted heat pump installed above the kitchen cabinets, perfectly integrated into the aesthetics of the space and sized to provide stable comfort for both heating and cooling.
Client context and objectives
The owner wanted to air condition the most heavily used area of the house—the kitchen and adjoining dining area—while also increasing the heating backup during the off-season and winter. His priorities:
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maintain a uniform temperature despite the heat input from cooking and sunlight;
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reduce energy consumption;
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avoid any loss of space or visual disruption in the room.
We recommended a Gree residential wall-mounted heat pump , known for its reliability, its inverter compressor and its very low noise level.
What we have achieved, step by step
Choosing the interior location
The indoor unit was positioned at the top of the wall, above the kitchen cabinets , under a ceiling with recessed spotlights. This location has three advantages:
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Controlled stratification : the treated air is blown at the right height to evenly mix the rising heat from the kitchen.
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Optimized horizontal diffusion : the air outlet directs the air along the ceiling towards the dining room, without creating a draft on the work surface.
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Aesthetics : The Gree's gray glass housing blends naturally with the wood finishes and blue ceramic.
Drilling and routing of connections
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Discreet rear outlet with Ø65 mm drilling behind the bottom of the unit.
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Useful refrigeration length : ~3.5 m up to the side facade overlooking the aisle, limiting pressure losses.
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External routing under matching capping , with curvature radii respected to preserve the integrity of the insulated copper tubes.
Condensate management
The configuration allows for gravity discharge (slope ≥ 2%), avoiding the use of a pump and therefore any additional noise in the kitchen. The discharge is protected against frost and splashes, with a non-return nozzle.
Electrical connection and protections
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Dedicated 240V circuit with circuit breaker calibrated according to the appliance plate.
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Waterproof disconnect box near the outdoor unit, in accordance with the Quebec Electrical Code.
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Certified conductors and grounding; conduits mechanically secured to resist vibration.
Rigorous commissioning
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Nitrogen test at 350 psi and leak test (soap + zero pressure drop).
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Vacuum draw to ≤ 500 microns, stabilized.
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Torque tightening of flared fittings (compliance with Gree specifications).
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Calibration of shutters, automatic ventilation settings and testing of heating , cooling and dehumidification modes.
Why a Gree wall-mounted heat pump for a kitchen?
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Fine modulation : the inverter compressor continuously adapts the power, which maintains the setpoint even during a cooking session.
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Quiet operation : ideal for living rooms where people talk and cook.
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Filtration : improves air quality by capturing fine particles transported by natural convection in the room.
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Seasonal efficiency : high COP in heating and efficient air conditioning from the first warm days.
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Simplified maintenance : direct access to filters; quick cleaning, without dismantling the woodwork.
Salient installation details to remember
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High installation above the cupboards, without encroaching on the ergonomics of the work surface.
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Gravity drain (reliable and silent) to the outside.
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Short connection limiting losses and optimizing efficiency.
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Aesthetics : no visible sheathing inside; discreet exterior capping .
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Comfort : diffusion along the ceiling, avoiding direct airflow onto the occupants.
Measurable results for the client
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Immediate comfort : rapid drop in temperature in summer and elimination of cold areas near the garden entrance.
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Thermal stability during cooking: the machine compensates for heat peaks without overconsumption.
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Reduced bills : in mid-season, the heat pump advantageously replaces electric heaters.
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Almost imperceptible noise level at low speed, perfect for meals.
HVAC maintenance: our advice for this configuration
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Filters : Gentle vacuuming every 4 to 6 weeks, washing in warm water as needed.
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Exchanger : annual professional dusting to preserve heat exchange.
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Drain : check the slope and exterior clearance before summer.
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Outdoor unit : maintain free clearance (snow, leaves), defrost the base in winter if there is accumulation.
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Annual AirGreen visit : checking pressures, tightening, probes and updating parameters.
Grants and Eligibility
High-performance, certified wall-mounted heat pumps may be eligible for current programs (e.g., LogisVert, Hydro-Québec , municipal initiatives). We assist our clients in Montreal, Laval , Longueuil , the North Shore and the South Shore in preparing their files (choice of eligible models, proof of installation, forms).
What sets AirGreen apart in Greater Montreal
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Precise sizing : selection of BTU capacity based on the internal loads of a kitchen (appliances, orientation, ventilation).
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Finish : short lines, clean drilling, waterproof sealing and HVAC installation that respects the architecture.
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Controlled deadlines : measurement, approval, installation and commissioning planned to minimize disruption to life at home.
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After-sales service : technical assistance and HVAC maintenance reminders to ensure equipment longevity.
Good practices and pitfalls to avoid in the kitchen
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Avoid blowing directly onto the hood or creating turbulent recirculation: the unit has been positioned to bypass this area.
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Provide a free air intake for the hood (if external exhaust) so as not to destabilize the pressure in the room.
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Do not obstruct the front of the indoor unit with decorative objects or baskets above the cabinets.
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Monitor humidity in cooking mode: use dry mode occasionally when steam is high.
Balance sheet
This Gree wall-mounted heat pump installation in Rosemont–La Petite-Patrie fulfills the objective: precise comfort in a busy kitchen, controlled energy consumption, and clean integration. The client now benefits from a more pleasant space for cooking and entertaining, summer and winter, with a discreet and efficient solution.
The job tools
Two quick checks with real numbers: what heat costs, and what your current heaters add up to in BTU/h.
Conversion: 1 W = 3.412 BTU/h. An indication, not a load calculation: baseboards and furnaces are often stronger than the real need, and they can stay as backup. AirGreen confirms the capacity on site.
How the job unfolds
The main steps of this kind of job at AirGreen. Every house has its quirks: the estimate brings them out.
We look at the room, the outside wall, the line route and where the outdoor unit will go. That is where the capacity gets chosen.
Model, capacity and price, in writing. We also check whether the model qualifies for assistance programs.
Floors and furniture protected, wall plate position marked level, wall opening located.
A single opening, with the slope the drain needs to flow outside.
Set on a stand raised above the snow, with the clearances the manufacturer requires.
Connected, insulated and protected. The opening is then sealed against water, cold air and insects.
A dedicated circuit and an accessible disconnect near the outdoor unit.
Leak test, vacuum, then start-up and a check of heating and cooling.
Remote, modes, filters: we show you the essentials before we leave.
- The on-site estimateWe look at the room, the outside wall, the line route and where the outdoor unit will go. That is where the capacity gets chosen.
- The quoteModel, capacity and price, in writing. We also check whether the model qualifies for assistance programs.
- Getting readyFloors and furniture protected, wall plate position marked level, wall opening located.
- The wall openingA single opening, with the slope the drain needs to flow outside.
- The outdoor unitSet on a stand raised above the snow, with the clearances the manufacturer requires.
- Lines, cable and drainConnected, insulated and protected. The opening is then sealed against water, cold air and insects.
- The electrical workA dedicated circuit and an accessible disconnect near the outdoor unit.
- Tests and start-upLeak test, vacuum, then start-up and a check of heating and cooling.
- The walkthroughRemote, modes, filters: we show you the essentials before we leave.
What we check on a job like this one
Each number is a point we check on site. Switch between summer and winter to watch air and heat move.
In summer, the outdoor unit rejects the house's heat outside.
Generic illustration of this type of installation, not a survey of this job site. Tap a number.
Mounted level on a wall plate, high enough for the air to reach the whole room, with enough space around it to slide the filters out easily.
The refrigerant lines, the communication cable and the drain go through the wall in a single opening, sealed against water, cold air and insects.
Two insulated copper pipes connect the two units. Outside, a line cover can protect them from sun, knocks and weather.
A shut-off switch near the outdoor unit isolates it safely for service. It must stay accessible at all times.
The compressor and the fan. In heating mode it captures heat from the outdoor air, even in winter, and moves it inside.
On the ground or on the wall, it keeps the unit above accumulated snow. The unit stays clear and defrost water can drain away.
The fan needs to blow freely. Storage, a fence or a wall too close, and efficiency drops while noise goes up.
Is your home ready?
Check what applies at your place. A "no" is not a refusal: it is what we sort out during the estimate.
Good habits, once the unit is in place
Six simple habits that keep the unit going. Your list stays on this device.
What to do, season by season
Three habits per season for this unit. They take a few minutes and prevent many calls.
- Clean the indoor unit's filters.
- Clear leaves and debris left on the outdoor unit by winter.
- Test cooling before the first hot days.
- Clean the filters more often when the unit runs a lot.
- Keep plants away from the outdoor unit.
- Check that no water drips from the indoor unit.
- Rake the leaves around the outdoor unit.
- Test heating before the first cold days.
- Book periodic maintenance before winter.
- Keep snow away from the stand and the front of the unit.
- Let the unit defrost: it is normal.
- Never hit the ice on the fins; call us if the unit stays iced up.
The right pages, at the right time
Four statements: true or false?
It all comes down to details you have just seen.
1. In heating mode, the outdoor unit can produce water.
During defrost cycles. That water must drain away without forming ice.
2. You pick the capacity with a simple square-footage rule.
Windows, insulation, orientation and how the room is used all count. Capacity is chosen on site.
3. A multi-zone connects several indoor heads to a single condenser.
One head per room, all on the same condenser. Each room keeps its own temperature.
4. The disconnect can sit behind the patio furniture.
It must stay accessible: it is what shuts the unit off for service.
0 / 4 right answers
What people ask us about this kind of work
Does a wall-mounted heat pump heat in winter?
Wall-mounted or multi-zone: how do I choose?
Where does the outdoor unit go?
Are there grants?
Do I need a permit?
How cold can it heat?
How much can I save?
How is the LogisVert assistance calculated?
Is it noisy?
The outdoor unit is covered in ice: is that normal?
Does AirGreen hold the required licences?
Is the estimate free?
No question matches. Write to us: we answer.
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Text and photo: a real AirGreen Climatisation & Chauffage job. The diagrams are generic illustrations of the type of installation, not a survey of this job site. Sources of the added figures: airgreen.ca product pages (NEEP / AHRI performance), Hydro-Québec (Heat pumps page, LogisVert, read on 13 October 2026), Régie de l’énergie (rate D as of 1 April 2026).